Personally, I'd love to see a new 105/2G AFS, without VR, without DC, that had the same imaging characteristics as the (excellent) 85/1.4G but at the 105mm focal length.
I'm real happy with their fast wides (my 24/1.4G and 35/1.4G are flat out amazing) but I think some medium speed wides at a more reasonable price point would be really helpful as not everyone wants or can drop 1800 bucks on a new wide angle every day. So a 24/2, 28/2, 35/2G series with good image quality would be most welcome, I'm sure, as would be, say, an 85/2G AFS.
I guess, reflecting on things though, if they came out with a crazy good 20, I'd buy it too. I do always ponder what it would have been like if (Nikon lens designer) Haruo Sato's 20/1.4 prototype ever were to go into production - that would have likely been something else.
-m